Braking device.



PATENTED JULY 23, 1907 VAN BUREN LAMB.

KING DEVICE. AAAAAAA 101; 121mm 0912.23, 1905.

VAN BUREN 'LAMB, OF'NEW HAVEN, ooNNEoTIo nAssIeNoR TO KEYSTONE BRAKE-SHOE COMPANY, OF NEW YORK, YI, A CORPORATION OF NEW YORK.

BRAKING DEVICE.

Specification of Letters Patent. Application and October 28,1906. Serial No. 284,922.

Patented July as, 1907.

To all whom it may concern;

-Be it known that I, VAN BUR'EN LAMB, residing at New Haven, in the county of New Haven and State of Connecticut, have invented certain new and useful Improvements in Braking Devices, of which the following is a full, clear, and exact description, such as willenable others skilled in the art to which it appertains to make and use the same.

This invention concerns the replenishment of wear accruing in braking means in which a. positively controlled body is'so contacted with a moving surface that a retardation of the relative movement therebetween is accomplished and it has particular utility in its application to brakesanalogous to those employed in-railroad moving stock in which a suitable shoe is pressed against some portion of a wheel, such as the tread, or against the track.- Such shoes and like bodies undergo a very considerable abrasion in service and fresh material must after a time be supplied to take the place of that worn away. Obviously, a great saving of material and other adherent advantages are had if the new material be so added to the residual shoe that the latter continues its braking function until every particle thereof is consumed in wear only and no part wasted except in actual service.

Heretofore, the partially worn shoe has-been afiixed to the wearing face of a fresh shoe by means of one'or more lugs protruding'from the back ofthe worn shoe is discarded by removal, breaking off or otherwise -so as to transversely extend in an axial direction Sn'clrlugs mechanically interlock with the wearing .iace of the fresh shoe which is inatiixed in correspondence with the rear logged face ofthe worn shoeand, as the attachment entirely depends upon suchlugs it fails as soon as the wear closely appriiaches thesame,

inasmuch as the shoe, being supported at a few points only, is subject to easy fracture at other points and once divided it readily detaches in" parts from the fresh shoe. Moreover, such lugs and portions as may .temp'erap'ly cohere to the fresh shoe arelia'ble at any timed 6 suddenly shift in position while'in contact with the wheel, either severely cutting the tread thereof or sotightly wedging thereagainst as to entirely stop itsfrotation, thereby producing a .flatwheel which is highly injulious to all parts of, the rolling stock.

This invention has in view, among other objects,

-the provision of such a system of unitary shoes and modeof joining .the same as will be applicable to any arrangement of braking means toovercome theabove stated defects.

: This invention also aims to produce shoes with interiit ting faces so contoured that when joined and worn thefeatures thereofwill not present transverse facets which in practice would otherwise cut and injuriously scratch the tread-of the wheel, and will be held rigidly inplace. m 2

Another object is to devise a bond between worn and fresh shoes which will for all practical purposesso merge the two together as a substantial'entity that the contacting portions will be integral and in wear not subject to detachment.

An additional object is to formulate a manner of integrally and otherwise effectively uniting -nietallic' bodies, such asjbra-ke shoe units and the like, which is so inherently simple in operation as to be adapted for being readily employed in any place by ordinary unskilled labor unassisted by cumbersomeor unusual mechanical appliances.

In its more specific application, this invention contemplates a union jandmode of producing the same between. contiguous parts of brake shoes which willsubs antially constitute 'a. true weld joint which however may also be more or less in the nature of'a solder joint according to circumstances.

Other objects and advantages will be in partobvious and in part more specifically pointed out hereinafter. With the aforesaid and other ends in view, my invention accordingly co ists in the combination of arts, featuresand modes of construction, and arrangement of elements hereinafter more specifically stated as an exemplification of the invention.

That this invention may be more fully understood, and made comprehensible to those skilled in its r'elat'- ing arts, I have accompanied the followingdescription by drawings illustrating one oi many possible emboditers it will be observed that like letters denote corresponding parts throughout all the views of which: Figure 1 is a general perspective of a brake shoe em-:

bodying structural characteristics adapted for being conveniently treated: by my novel. mode of uniting such parts. Fig 2 is a sectional perspective illustrating the structure shown-in Fig. I'as assembledwith a like structure preparatory to carrying out my methodof joining the same.

a simple deviation from the preceding in which a plu- E rality of metallic granules are applied within the spaces intermediate the faces of the shoes for further uniting the same according to my invention. Fig. 5 is a. view ments thereof and now upon making reference to such drawings through the instrumentality of reference let- Fig. 3 is a horizontal'sectional -view taken along line a-a of Fig. 2 Fig. 4 illustrates of the structure shown by Fig. 4 aite'r undergoingltreat- 6 denotes themanner in which theopposing facesol.

, the brake shoes may be corrugated or pebbled to in siire a'better uniting contact. Fig. 7 is a view of the structure corresponding to Fig.6 but after having un-- 'ment in accordance withmy improved process. .Fig. l

.dergone the manner of joiningprescribod'by'thisim v vention. Fig. 8 denotes a. manneroithe op. "11o ability of the matching laces.

posingiaces so as to constitute channels for the recep tion of the uniting substance. Fi 9 is a sectional v in a corresponding recess in the rear lace of another shoe. ,Each shoeis also preferably provided with a re cess such as 1- adapted to receive a colrespondingly shaped and positioned lug 5. This will be apparent on inspection of Fig. 2. Preforably,=alii1irlg apertures 6 and 7 are provided for-the reception of any suitable joining pin 8 which will serve to hold the unitary shoes together during the poignant-"int uniting thereof by means of my. process.

To facilitate the application of my process to such shoes a space 9 is provided intermediate the adjacent laces for the reception of the uniting substance. Ob viously, such space or spaces may be given any pre ferred shape, proportions or configuration. Es ape vents may be especially provided for the exit of gases arising during the permanent uniting oi the shoes according to the herein described process, or reliance may be had for this purpose upon the ordinary perine- Likewise, entrance ports may be provided in caseit is desired tliatthe uniting-substance beintroduced after having brought the shoe members into the desired juxta-position, al-

though this invention also contemplates the applica: tion of such uniting substance to the feces of the shoe in the form of plastic paste, in which case the ports for the introduction of the sameinay be dispensed with. Thus in .liig. 2 the uniting substance, which is usually of a pulverant flowing nature may be introduced through the opening at the top oi the figure in which the transverse lug similar to that shown at the bot-tour is dispensed with. To facilitate the introduction of such substance, I may provide openings of a funnel shape in which case a lug similar to 3 would also be provided at 'the top of the shoe so that it would be joined to the mate along the whole exterior contour.

For they welding substance Lpreior in practice to employ any of the well known compositions adapted to spontaneously react and lose at a high temperature upon being suitably started. Many suchsubstanccs are in conunon use and generally contain ni-lvcrulcnt aluminium mixed with some suitable n'lotallic oxidalion product such as a metallic sullid, oitid, chlorid or tl'loJiko. A mixture oi aluminium and iron oxid inay be resorted to in this cmmturtion. Such composition may be employed in various ways, thus as lmrotol'oro indicated it may be externally applied to the intersticos between shoes when littcd together through one or more small openings loading from the said iutcrsticcs to the outside of the shoe. Such application n'iay be readily mad.- at any point or locality as itruquires nothing more than a suitablo rocoptarlc in! pouring the pulwu'ant mutorial into plavh. 'lliis opcratirm. as will .bc understood, is sur'll as may be readily pm'l'ormod by ordinary unskilled labor and no unusual or costly in plomenlsarorcqllirolL Another manm-r by which the Harm: end only in easily attained "within the scope oi the herein described invention, is by applying such sell-fusing composition in the form of a paste to the propel." surface of each uni tary brakeshos so that the whole constitutes a selfcontained' device adapted for br'og instantly aflixed' mechanically toa worn shoe and l: simple ignition at a snitablepoint becomes at permanently Welded to on ch Wtn'n shoe.

Many other obvious-ways may be resorted to, time a paste may in some cases be substituted by a pulvorant mass suitably retained in place by means of properly shaped pockets or films oi combustible or other harmless material.

To increase the efiicacy oi this composition 1 may connr 'ngle therewith granules of iron, solder or other mater al. adapted to unite with the material of the shoe under the conditions of a hightemperature.

in Fig. 4 i have illustrated one manner in which a bond may be effected between. the loss through the a .ance of granules dosigna d by it). Such granules which ordinarily might be said to consist of iron are in contact with. the wall portion ll of intorfitting brake shoes. Gomminglod with such granules is the substance 12 which upon. ignition undorgoes a sell fuse, thereby melting all of the adjactmt metallic surfaces and causing them to unitcsomcwhat after the fashion designated and shown by Fig. 5.

Fig. 6 illustrates a slight deviation from the foregoing forms, the opposing aces of the shoes being pebbled or provided with other inter-fitting sutures 13 so as to provide a sufiicient space adjacent to contacting per: tions for the introduction of a composition having the character as stated. After undergoing ignition the contacting portions will fuse'together soi'nowhataltcr the "iashion illustrated by Fig. 7.

Fig. 9 shows the above in section.

limiting sense. 1 Thus it is well within the contemplation of any invention to so vary theconstitution of thesclf-roactivo, bonding substance to arrive at ends made prcllcrable by pr: cc, such as employing a composition whose reactive products possess desired phy i cal properties, as softness, inallcability, strength or the lilro. Likewise, such substance may not between suitable intorlitting elernonts of respective shoes to serve as a key in addition to a weld. Also discharge ports may be provided for excess or undcsiraljlloreaction products.

it will also bo understood that this invention is not conliucd to supplying fresh m'al crial to the roar l'acc of tho worn shoe, since, by the use of the welding subslam-o, new shoes may be adapted for con vonicnt application directly to the worn surfaces or to the ill-ml.

Other arrangoments and nmdilications are within the scope of the following claims, and it is to be understood that this invontlol'l in ciuil'iorltly fittcd for the mounting of shoes upon bralco heads, as well as two shocs uno upon the othor, and the tr-rm lmllm shoes" 's used through the following claims in a broad sense as spaced apart and other parts constitute inter-fitting ele- 1. The process of uniting brake shoes consisting in juxta-positionln'g faces thereof and intermediatoly applylug a fusing heat whereby such faces arewelded together at one or more places.

2. The process of uniting brake shoes consisting in juxta-posltioning faces thereof whereby certain portions are in Contact and other'portions have interstices there between, and applying a fusing heat within such interstices whereby adjacent parts are fused together.

3. The process oi. uniting brake shoes consisting in contacting faces thereof, whereby certain portions match and others provide interstices therebetwecn, and raising the temperature within such interstices untll portions of thdshoc are fused or welded together.

4. The process of uniting brake shoes consistlng'in juxtu-positioning faces thereof, vwhcreby'interstices are provided therebetween, and bringing a material within such interstices to a temperature suificient to fuse together contacting brake side walls.

5. The process of uniting brake shoes consisting in juxta-positioning faces thereof whereby parts are slightly spaced apart, and introducing into such spaces a highly heated welding Substance.

6. The process of uniting brake-shoes consisting in juxta po'sitioning faces thereof so as to provide intermediate spaces, and introducing into such spaces a-highiy, heated substance adapted' to fuse together contacting facsand unite therewith. -7. The process of uniting brake shoes consisting in juxta-positioniugmale and female faces thereof and introducing into interstices thcrebetween a compound adapted to be hardened therein and thereby act as a key for locking the faces together.

8.. The process of uniting brake shoes consisting in juxta-posjtioning faces thereof whereby parts are slightly ments, and fusing intothe spaces a compound adapted to set therewithin ind so unite to the aforesaid spaces as to permanently unite them together.

9. The process of uniting brake shoes consisting in juxta-positioning faces thereof whereby certain portions are in contact and other'portions provide spaces therebetween, and introducing into such spaces a highly heated Welding substance.

10. The process of uniting brake shoes consisting in bringing together faces thereof whereby certain portions match and others are spaced apart to provideiuterstices therebetwcen, and ntroducing into such interstices a highly heated welding substance.

,11. The process of uniting brake shoes consisting in junta-positioning male and female faces thereof and introducing' into intersticestherebetween a compound adapted to so react 'as'to come to a fusing temperature, thereby welding together said shoe faces, and. on subsequently cooling to harden into a key for further uniting the faces.

12. The process of uniting brake shoes consisting in juxta-positinnlng the faces thereof-with certain partsiin ,contact, and applying intermediate the other parts a self fusing weidingsuhstance.

13. The processof uniting brake shoes consisting in juxta-posltloning the faces thereof whereby certain portions are in contact and other portions provide intersticesth'erbetween and filling such interstices with a. self fusing substance. adapted to weidQtogeiher and otherwisepernlanentiy unite said-contacting faces.

1 4. The process of uniting 'brako shoesconsisting in" contacting tacos thereof whereby certain portions match and others provide interstices therobetween, and introduc lng within such inim'sticcs a self fusing substance adapted to melt together adjacent portions of the contacting facesand become welded thereto. 15. The process of uniting brake shoes consisting in juxtapositiouing faces thereof whereby corresponding recusses will be brought into registry and filling said recesses with a self fusing substance adapted to weld together contacting surfaces and subsequently set within said recesses to pcrnuinently lock together said shoe faces.

.iii. 'ihe process of uniting" brake shoes. consisting in bringing together faces thereof so as to provide intermediate spaces, and introducing thurcinto a self fusing sub;

stance adapted to weld together contacting surfaces and become fused thereto.

17. The process of uniting brake shoes, consisting in bringing together male and female faces thereof and introducing into interstices therebetween a self fusing composition adaptedv to weld together contacting surfaces and subsequently set to form a key for further securing the shoes together.

18. The process of uniting hraite shoes, consisting in junta-positioning faces thereof wherpby certain parts are slightly spaced apart and other parts constitute interiitting elements, and filling the spaces with a self fusing compound adapted to melt together joints in the adjacent shoe faces and to set within tii spaces and thereby per- .tused adjacent contacting races.

*26QA brake shoe. having applied to one face thereof aselfQfusing welding substance whereby such shoe may be permanently aiiixed to' another. i

to the same.

21. A process of. unitinghrake shoes, consisting in junta positioning male and female faces thereof, and introducing into interstices thcrcbetwccn a pulverant compound of a selffusing nature adapted to subsequently harden therein and serve as a key for locking the faces together.

22. Aproccss of uniting brake shoes consisting in juxtapositioning male and female faces thereof and introducing into interstices therebetwccn a compound of a puiverant nature and adapted to so react as to come to a fusing tcmperature, thereby'welding together said shoe faces, and on subsequently cooling to harden into a key for further uniting the faces.

23. The processor uniting brake shoes consisting in juxta-positioning the faces thereof with certain parts in contact and applying intcrmedi ate'the other parts a self fusing welding substance comprising pulv'eraut aluminium as an essential constituent.

24. The"p rocess of uniting brake shoes, consisting in juxta-positi'oning the faces thereof' with certain parts in contact and applying intermediate the other parts a selffusing composition containing an ingredient adapted to weld to and t ereby connect the brake shoes.

25..1he process of uniting brake shoes, consisting in juxtapositioning the faces thereof whereby certain parts contactland other parts provide intermediate interstices and applying thereto a' pulverant self-fusing welding composition containing granules adapted to be inclt ed and '27. A plurality of brake shoes having interfittihg faces and provided with interstices therebetwe'en with a selffusing hardening substance adapted to weld and key together said shoes. 3

23. A plurality oil brake shoes having interfit-tlng faces welded together by.a self-fusing compound. p

29. A system of brake shoes constituting units consisting of a brake s'hoe'portiohanda self-reacting composh tion applied to suitable parts thereof whereby such units are self-contained and adapted for being welded' together by setting up areacti'on in saidksomposltion.

30. A plurality o f"brake'. shoes havlngcontacting and inter-fitting portions fused or wcldcd ogcthcr and having recesses intermediate-other portions containing a self-fusing substance adapted to bond and key such latter portions together. 4

,In' testimony whereof I aiiix my signature, in the presence of two witnesses.

' VAN liUlti iN LAMB.

Witnesses:

' limmrA. liuciuuouiun iVinmAn BRYAN. 

